如何发送带有嵌入式图像的python电子邮件作为签名?目前,我使用链接来显示如下图像:
<img border="0" src="https://website.com/logo.png" role="presentation" alt="logo mail icon" style="max-width: 300px; width: 300px; display: block;">
但是在Outlook中,图像未加载,用户需要单击“显示图像”,这会破坏电子邮件,因为我将其用于商业目的(这是注册的确认链接)。有没有一种方法可以内联显示图像并通过电子邮件而不是链接发送它们?
到目前为止,我的代码:
from email.message import EmailMessage
import smtplib, ssl
import email.utils
import html2text
with open(html_template, 'r') as f:
html_string = f.read()
plain_text = html2text.html2text(html_string)
msg = EmailMessage()
msg['Subject'] = subject
msg['From'] = mail_address
msg['To'] = email_receiver
msg['Date'] = email.utils.formatdate()
msg.add_header('Content-Type','text/html')
msg.add_header('Content-Disposition', 'attachment', filename=file_attachment)
msg.set_content(plain_text)
msg.add_alternative(html_string.format(name=surname), subtype='html')
files = [file_attachment]
for file in files:
with open(file, 'rb') as f:
file_data = f.read()
file_name = f.name
msg.add_attachment(file_data, maintype='application', subtype='octet-stream', filename=file_name)
with smtplib.SMTP(smtp, port) as smtp:
smtp.ehlo()
smtp.starttls(context=ssl.create_default_context())
smtp.ehlo()
smtp.login(mail_address, mail_password)
try:
smtp.send_message(msg)
smtp.quit()
except Exception as e:
print('ERROR')
我找不到很多方法或解决方案。我已经读过有关将图像编码为base64的信息,但是我有点困惑。
提前谢谢!
答案 0 :(得分:1)
要内嵌显示图像,您必须在电子邮件本身中提供图像数据。您可以通过使用base64编码的图像数据字符串来实现。这里是一个例子:
<img alt="Website" width="16" height="16" style="border:none;" src="data:image/png;filename=web.png;base64,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" />
您可以使用online converters来获取base64字符串或直接在python脚本中构建它:
import base64
encoded_string = base64.b64encode(open("image.png", "rb").read())
请记住,内嵌图像也可能会被收件人的邮件客户端阻止,因此请始终提供正确的alt
描述。